Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 13, issue 6
Articles | Volume 13, issue 6
https://doi.org/10.5194/esurf-13-1229-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-13-1229-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 6
Research article
 | 
24 Nov 2025
Research article |  | 24 Nov 2025

Improving a multi-grain-size total sediment load model through a new standardized reference shear stress for incipient motion and an adjusted saltation height description

Marine Le Minor, Dimitri Lague, Jamie Howarth, and Philippe Davy

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Short summary
In natural rivers, flow variability and sediment heterogeneity affect how sediment grains are transported. A unique law that predicts the total amount of sediment transportable by a river for a wide range of sediment mixtures and flow conditions exists, but unclear trends remain. Two improvements to this law – a standardized onset of sediment transport and a common reference transport height across all sizes – appear to be critical to having a functional multi-grain-size total sediment load.
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